(a) Combustion analysis of toluene, a common organic solvent, gives 5.86 mg of \(\mathrm{CO}_{2}\) and 1.37 mg of \(\mathrm{H}_{2} \mathrm{O}\). If the compound contains only carbon and hydrogen, what is its empirical formula?
(b) Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1005-g sample of menthol is combusted, producing 0.2829 g of \(\mathrm{CO}_{2}\) and 0.1159 g of \(\mathrm{H}_{2} \mathrm{O}\). What is the empirical formula for menthol? If menthol has a molar mass of 156 g/mol, what is its molecular formula?
Text Transcription:
CO2
H2O
Step 1 of 5) Combustion analysis of toluene, a common organic solvent, gives 5.86 mg of and 1.37 mg of . If the compound contains only carbon and hydrogen, what is its empirical formula (b) Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1005-g sample of menthol is combusted, producing 0.2829 g of and 0.1159 g of . What is the empirical formula for menthol If menthol has a molar mass of 156 g/mol, what is its molecular formulaFor any monatomic ion, the oxidation number equals the ionic charge. Thus, K+ has an oxidation number of +1, S2- has an oxidation number of -2, and so forth. In ionic compounds the alkali metal ions (group 1A) always have a 1+ charge and therefore an oxidation number of +1. The alkaline earth metals (group 2A) are always +2, and aluminum (group 3A) is always +3 in ionic compounds. (In writing oxidation numbers, we will write the sign before the number to distinguish them from the actual electronic charges, which we write with the number first.)
